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This patch updates Unicode data in Character class:
1. UAX#50 Unicode Vertical Text[1] to rev 19 (Unicode 10).
2. IsCJKIdeographOrSymbol was not updated for a while, include
   ideographic characters to be in sync with UAX#50.
3. IsCJKIdeographOrSymbol includes all plane 2 rather than each
   block.

[1] http://www.unicode.org/reports/tr50/

Change-Id: Ie8e7f3b45d340870be5d1316021b49231be9cdd2
Reviewed-on: https://chromium-review.googlesource.com/822551
Commit-Queue: Koji Ishii <kojii@chromium.org>
Reviewed-by: Dominik Röttsches <drott@chromium.org>
Reviewed-by: Jungshik Shin <jshin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524661}